Shelly Plug & Play "Blu TRV & Blu Gateway Gen3" 2-Pack Smart, Bluetooth-controlled, and Wi-Fi-enabled thermostatic radiator valve for precise room temperature control. A gateway is required (included). Package contents: 2x Shelly BLU TRV, 1x Shelly BLU Gateway Gen3. A smart thermostatic radiator valve for advanced room temperature control and ultimate climate comfort. Heating control made easy. Experience unparalleled comfort and efficiency with the smart thermostatic radiator valve head from Shelly. The Shelly BLU TRV blends seamlessly into your interior and offers precise climate control, ensuring the ideal temperature in every room. Bluetooth-powered and Wi-Fi-enabled, it boasts fast response times, long battery life, and effortless integration into your smart home ecosystem. To activate the Wi-Fi functionality, you need a compatible gateway such as the Shelly BLU Gateway Gen3 (included). The new standard for comfortable living. The Shelly BLU TRV features precise temperature control, allowing you to set your desired comfort level in 0.1°C increments, ensuring a consistently pleasant environment. Feeling cold and need it warmer? The boost mode can bring a room up to the perfect temperature in no time. Versatile heating control. With smart time control, you can adapt your heating to your daily routines, optimizing both comfort and energy efficiency. For even more precise temperature control, the Shelly BLU TRV supports external sensors such as the Shelly BLU H&T and the Shelly BLU Door/Window Sensor. This makes it a versatile addition to any heating system. The perfect combination of comfort and efficiency. As soon as you enter your home, it greets you with the ideal temperature. And you reduce unnecessary energy consumption when no one is home. With our cloud application, you can effortlessly create smart heating schedules that adapt to your daily routine, ensuring a comfortable indoor climate when you're home and saving on energy costs when you're away. Bluetooth-controlled and Wi-Fi enabled. 2 x 1.5V AA batteries included. Precise temperature control: 0.1°C boost mode for quickly heating a room. Smart schedules: Set daily schedules to keep your home warm and save energy. Supports external sensors (compatible with Shelly BLU H&T, Shelly BLU Door/Window). Comprehensive integration into smart home systems. Features: Bluetooth-controlled and Wi-Fi enabled. Precise temperature control: 0.1°C boost mode. Faster response time and easy integration. A gateway is required. Enjoy temperature control with adjustments as precise as 0.1°C for optimal comfort. For faster room heating. Rotatable digital display. Long-lasting batteries (2 x 1.5V AA - included). Supports external sensors. View and manually adjust the temperature when you are at home. Up to 2 years of battery life, depending on daily use. Compatible with Shelly BLU H&T and Shelly BLU Door/Windows sensors for precise room temperature measurement. Technical specifications: Dimensions (H x W x D): 60 x 27 x 11 mm / 2.36 x 1.06 x 0.43 inches. Weight: 10 g. Housing material: Plastic. Housing color: White. Ambient temperature: -20°C to 40°C. Humidity: 30% to 70% relative humidity. Electrical power supply: 5V (via USB-A port). Device power consumption: 1W. Wireless: Wi-Fi protocol: 802.11 b/g/n. Frequency band: 2412 - 2472 Hz. Max. RF power: 20 dBm. Range: Up to 50 m outdoors, up to 30 m indoors (depending on local conditions) Bluetooth protocol: 4.2 with BLE Frequency band: 2402 - 2480 MHz Max. RF power: 4 dBm Range: Up to 30 m outdoors, up to 10 m indoors (depending on local conditions) Microcontroller CPU: ESP-Shelly-C38F Flash: 8 MB Firmware functions Schedules: 20 Webhooks (URL actions): 20 with five URLs per hook Scripting: Yes MQTT: Yes Encryption: Yes.